(Link is mine, use it as reference only)
Email received today, entitled "For You: $2 in Google Play Credit". The terms and conditions state the following:
This message was sent to [EMAIL REDACTED] because you asked us to keep you up to date with the latest news and offers from Google Play. If you do not wish to receive these emails, please unsubscribe here. You can also change your email preferences on Google Play by logging in at https://play.google.com/settings
. Please do not reply to this email, as we are unable to respond from this email address. If you need support, please visit the Google Play Help Center.
*Valid for one $2 USD Google Play credit. Open to participants who receive a promotional code from Google. Not reloadable; no cash value. Offer ends February 28, 2018 and must be added to a Google Payments account by February 28, 2018. Once added, credit must be used on Google Play by February 28, 2018. Certain subscriptions excluded. Valid in United States only. Limit 1 per user. Must be United States resident, have Internet access on a compatible device, and have or activate a Google Payments account. Age restrictions apply. See Promotional Balance Terms and Google Play Terms for more information. Promoter: Google LLC, 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA
In order to find this email in my browser on GMAIL, there are separate tabs that separate emails into categories. This email falls under the "Promotions" category, and you will not find it under your primary unless you've added Google Play to your VIP.